/* eslint-disable no-extend-native */

Object.prototype[Symbol.iterator] = function(){

  return  Object.values(this)[Symbol.iterator]()

}

let [a,b] = {a:1,b:2} //使 其成立s

console.log(a,b);




let count =0

function fun(){
  let count = 0
  count++
  console.log(count); // ？

}
fun()
console.log(count);// ？

